Here's what I expect. First of all, the nation anthem is a fight song, not a lullaby. Quit dragging it out and quit adding so many extra notes one cannot recognize it. If you want to see the pace it should be played or sang, watch a marching band play it. That's how it should be.
Spectators, do not move, scratch, talk or anything else while the song is being sung. You stand at attention with you hand on your heart, or if you are a veteran, you can now salute. Your eyes are suppose to be glued on the flag. The only thing that should be coming out of your mouth is the words of the song, if you want to sing along. Do not start cheering until the song is over!!!